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Family Nassidce. 

 Nassa (Ilyanassa) obsoleta, Say. 



Nana obsoleta. Say (1822) ; et auct. 

 Ilyanassa obsoleta, Stimpson (1865). 



bt. Mary's Bay, N.S. ( Verkruzeu) ; Annapolis Basin (J. M. Jones) ; Minas 

 Basin (Ganong) ; North-west Arm, Halifax Harbour, — Pictou, &c. (Willis). 

 Beach at Pointe du Chene. N.B. ( Whiteaves) ; Summerside, P.E.I. (Rev. H. 

 W. Winkley) ; vicinity of Cape Gaspe (Bell). Verrill says that this species 

 has not been found in the Bay of Fundy, and it has not been found in the 

 Canadian Pleistocene. 



Nassa (Tritia) trivittata, Say. 



Ifassa trivittata, Say (1822). 



Tritia trivittata, H. and A. Adams (1858). 



Bay of Fundy and Atlantic coast of Nova Scotia, from low- water mark 

 to a depth of 60 fathoms. In the Gulf of St. Lawrence the species has 

 been taken at several localities on both sides of Northumberland Strait, in 

 the Baie des Chaleurs as far up as Dalhousie, northward to Gaspe Bay, 

 where Sir J. W. Dawson dredged specimens of it in 4 fathoms sand, near 

 the shore, in 1858. The writer has collected similar specimens a little above 

 the village of Gaspe Basin, where the water is brackish. 



Family Buccinidoe. 



BUCCINUM UNDATUM, L. 



Buccinum undatum, L. (1761) ; et auot. 

 Buccinum undulatum, Moller (1842). 

 Buccinum Labradorense, Reeve (1846). 



Living specimens of a shell that is practically indistinguishable from the 

 B. undatum of the British Islands and northern Europe, are not uncommon 

 locally throughout the entire region, at low-water mark, and at depths down 

 to 170 fathoms or more. Some of these shells, too, attain to as large a size 

 as the largest British or Norwegian specimens. 



Similar specimens have been dredged as far to the southward as the coast 

 of New Jersey, and on the Labrador coast Packard finds B. undattcm " most 

 abundant just below low-water mark, where fine specimens, 3A inches long, 

 are frequent." Miss Bush, in her list of the Mollusca and Echinodermata 

 obtained by the Stearns expedition, says that it occurs abundantly along the 

 coast of Labrador in 1 to 15 fathoms ; and Dall, that several living specimens 

 were collected at Davis Inlet, Labrador, by L. M. Turner in 1882. 



